 /*******************************************************************************
  * Copyright (c) 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  ******************************************************************************/

 package org.eclipse.ui.internal.navigator.filters;

 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.viewers.ViewerFilter;

 /**
  *
  * A no-op viewer filter used to prevent null return values from
  * {@link CommonFilterDescriptor#createFilter()}.
  *
  * @since 3.2
  *
  */
 public class SkeletonViewerFilter extends ViewerFilter {

     /**
      * The singleton instance.
      */
     public static final SkeletonViewerFilter INSTANCE = new SkeletonViewerFilter();

     private SkeletonViewerFilter() {
     }

     /*
      * (non-Javadoc)
      *
      * @see org.eclipse.jface.viewers.ViewerFilter#select(org.eclipse.jface.viewers.Viewer,
      * java.lang.Object, java.lang.Object)
      */
     public boolean select(Viewer viewer, Object parentElement, Object element) {

         return true;
     }

 }

